RPN-67 NP

• Added 20 original HP program cards, for a total of 25 cards. They are marked "NP" on the website. • Improved paper tape printer with animated paper roll. • Some fonts changed from Courier to Menlo for better legibility. • Requires iOS 12.0 or later.

2.7

January 14, 2019

• Name change of the app • Access RPN-67 homepage directly from the info screen • In vintage mode, loading a card produces the sound of a real HP-67's motor • Fixed: app freezing after setting mode switch to position W/PRGM

2.6

September 28, 2016

This update requires iOS 8 or later. • Print preview in iOS 9 and higher • Calculator sounds mix with background audio and have their own volume control

2.5

September 2, 2015

• If audio is playing on start-up, RPN-67 Free will not produce any sounds

2.4

April 8, 2015

• Corrected program card "Circle Computations" not properly setting up calculator • Cosmetic changes, speed improvements

2.3

February 15, 2015

• Now with 5 original HP sample programs • Source code of included programs may be printed on paper tape • Nicer looking printouts on external printers (AirPrint) • Improved sound volume control • 64-bit support Bug Fix: • Calculator didn't turn itself on automatically (iOS 8 only)

2.2

August 23, 2014

• Rounding in SCI and ENG notation now works correctly • Fixed FRAC function for some rare cases

2.1

March 28, 2014

• Now with 30 backgrounds to choose from, PLUS import your own background image • Improved y^x function, e.g. (-9)^4 will not produce complex result anymore • On PAUSE, tapping and holding a key now prolongs pause Remember: Leaving a nice review on the App Store not only makes the developer feel good, it also helps other people assess RPN-67 Free.

2.0

September 18, 2013

• Now with three sample program cards • Key fronts revealed as long as the h key is active • Full-screen display • iOS 7 compatibility

1.2

June 6, 2013

• Improved preview of background patterns in settings dialog Bug fixes: • Fixed pasting values dropping decimal point in certain regions • Fixed a situation where the stack would not auto-lift

Description of RPN

RPN-67 NP is the non-programmable version of RPN-67 Pro, the first complete simulation of Hewlett-Packard's HP-67 legendary programmable calculator for iOS. Produced from 1976 to 1982, the HP-67's capability to store programs on magnetic cards, wide array of functions, merged keycodes, indirect addressing and other enhancements made it a huge success among scientists, engineers and other professionals. Thousands of programs were written for it. RPN-67 NP allows you to load and run 25 original HP sample program cards. It lacks the program creation and card management features of the Pro version, as well as its massively expanded array of functions and operations. Apart from these restrictions, RPN-67 NP is a very capable vintage scientific calculator. Features: • "Live" display of stack, memory registers, program counter, flags • Virtual paper tape printer • E-mail or print the paper tape • Cut/copy/paste display value • 30 selectable background images, even add your own. More features the HP-67 never offered: • Non-volatile memory - stack, registers, program • Status indicators for prefix keys (f, g, h, STO, RCL, GTO, DSP) • Keycode-to-command translation while single-stepping a program • Cancel SST or BST operation by sliding your finger off the depressed key All advanced features may switched off with a single setting, allowing you to experience a real HP-67 as closely as possible. For more information visit the RPN-67 website: cuveesoft.ch/rpn67

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RPN: FAQ

Is RPN software compatible with iPad devices?

Yes, you can use the RPN app on iPad devices.

Who developed the RPN app?

Willy Kunz is the developer of the RPN app.

What is the minimum supported iOS version for RPN?

RPN minimum iOS requirement is iOS 12.0.

What is the current app rating of RPN?

Currently, the RPN app has a user rating of 3.7 } and receives mild reviews.

What category is the RPN app?

The App Genre Of The Rpn App Is Productivity.

What is the recent version of RPN?

3.0 is the newly released version of the RPN app.

What date was the latest RPN update released?

The date of the latest RPN update is October 1, 2024.

What is the exact date the RPN app came out?

RPN became publicly available on February 6, 2023.

What age is RPN appropriate for?

The content advisory rating for the RPN app is Willy Kunz.

What are the languages available on RPN?

RPN is now available to use in English.

Can I access RPN via Apple Arcade's subscription service?

No, RPN is not on Apple Arcade.

Is RPN equipped with in-app purchases?

No, RPN does not feature in-app purchases for users.

Is RPN fully compatible with Apple Vision Pro?

Unfortunately, RPN is not fully compatible with Apple Vision Pro.

Does RPN incorporate ads within the app?

No, RPN does not incorporate ads within the app.

Screenshot of RPN

free / freePrice

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Reviews of RPN

Leave a Review RPN

Absolutely first class
A superb rendition of one of Hewlett Packard's best ever programmable calculators - now on steroids, thanks to modern computing power.

The calculator not only works much faster than the original and apparently without fault, it also makes very good use of the iPad screen in showing the stack and registries.

Anyone even vaguely familiar with RPN will surely find it impossible to award less than the full five stars. *****
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Whapper Stan
4 years ago
Just like the real thing
I got one of these in 1978 and discovered RPN. I have never used anything but RPN calculators since. I agree that the audible key clicks can be annoying, but I usually keep the sound turned off on my iPad anyway. This is a great emulation of my long dead HP67.
JJMPAM1960
5 years ago
Can’t hand out less than one star, unfortunately
Ohhh, that hurts. The desecration of a great calculator.
die hard rpn
6 years ago
Developer Response
A few words about what exactly you don't like with this app might prove helpful to other users.

See 9 more reviews

RPN-67 NP

Legendary Calculator

Details about RPN

Features

Developer of RPN

Version History of RPN

Price History of RPN

Description of RPN

RPN: FAQ

Is RPN software compatible with iPad devices?

Who developed the RPN app?

What is the minimum supported iOS version for RPN?

What is the current app rating of RPN?

What category is the RPN app?

What is the recent version of RPN?

What date was the latest RPN update released?

What is the exact date the RPN app came out?

What age is RPN appropriate for?

What are the languages available on RPN?

Can I access RPN via Apple Arcade's subscription service?

Is RPN equipped with in-app purchases?

Is RPN fully compatible with Apple Vision Pro?

Does RPN incorporate ads within the app?

Screenshot of RPN

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Reviews of RPN

Leave a Review RPN

Absolutely first class

Just like the real thing

Can’t hand out less than one star, unfortunately

Developer Response